CN108733266A - One kind being based on infrared touch panel multi-touch system and its recognition methods - Google Patents
One kind being based on infrared touch panel multi-touch system and its recognition methods Download PDFInfo
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- CN108733266A CN108733266A CN201810472291.2A CN201810472291A CN108733266A CN 108733266 A CN108733266 A CN 108733266A CN 201810472291 A CN201810472291 A CN 201810472291A CN 108733266 A CN108733266 A CN 108733266A
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- infrared
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- transmitting tube
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- echelette
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/042—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means
- G06F3/0421—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by opto-electronic means by interrupting or reflecting a light beam, e.g. optical touch-screen
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Input By Displaying (AREA)
Abstract
One kind being based on infrared touch panel multi-touch system and its recognition methods, including the circuit board on touch screen, the one-to-one infrared transmitting tube and infrared receiving tube of four side of circuit board setting, the host for controlling the core processor of infrared transmitting tube and infrared receiving tube and being connect with core processor port, infrared transmitting tube and infrared receiving tube are sequentially arranged in the X-direction and Y-direction on four side of circuit plate framework, the infrared transmitting tube that core processor while four road drive signals of generation respectively drive each direction in X-direction and Y-direction sends 2 beam infrared lights to the infrared receiving tube of offside.The present invention is quickly scanned in the way of X-direction and the full screen scanning of Y-direction both ends reverse scan simultaneously, infrared transmitting tube is set to form vertical echelette scanning net and inclined echelette scanning net with infrared receiving tube, judge true and false touch point by coordinate shift amount, it also can accurate judgement touch point in the case where there is big barrier to block.
Description
Technical field
The present invention relates to touch screen technology fields, more particularly to one kind being based on infrared touch panel multi-touch system and its knowledge
Other method.
Background technology
Touch screen is referred to as man-machine interface in industrial circle, is a kind of input equipment, is mainly positioned by touch tablet,
To computer input operation order, to realize the target of human-computer interaction, infrared touch panel is more commonly used at this stage touch
The recognition methods of one of panel module, multi-touch of infrared touch screen is the infrared of two groups of dense arrangements based on X-direction and Y-direction
Pipe is scanned successively in screen surface and forms orthogonal echelette scanning net, it is infrared to judge whether X-direction and Y-direction have
Line blocks, and if there is blocking, positioning blocks point coordinates, but infrared touch panel has as many as hundreds of pairs using number of sensors, it is difficult to
Ensure that each pipe remains to keep after working long hours the consistency of luminance, thus many touch screens work one section when
Between after will appear luminous tube aging and it is insensitive or broken string the problems such as, the infrared touch panel of early stage is made for shocking by electricity
With, small size using more, and with LCD, the flat panel displays size such as PDP is increasing, and price is lower and lower, large scale
Using also more and more, and large-sized touch-control is to write, but conventional touch screen reaction rate is low using more demands, is caused
Keep handwriting trace deformation serious, and multipoint positioning occurs judging true and false point by accident, it cannot in the case where big barrier such as blocks at the complex situations
Normal work.
Invention content
The present invention provides in order to solve the above problem, and it is fast to provide a kind of corresponding speed, big barrier block it is lower can be normal
The infrared touch panel multi-touch system used and its recognition methods.
The technical solution used in the present invention：
One kind being based on infrared touch panel multi-touch system, including the circuit board on touch screen, four side of circuit board are arranged
One-to-one infrared transmitting tube and infrared receiving tube, control infrared transmitting tube and infrared receiving tube core processor and with
The host of core processor port connection, infrared transmitting tube and infrared receiving tube are sequentially arranged in the side X on four side of circuit plate framework
To and Y-direction, core processor generate four road drive signals simultaneously and respectively drive the infrared of each direction in X-direction and Y-direction
Transmitting tube sends 2 beam infrared lights to the infrared receiving tube of offside.
The infrared transmitting tube emits echelette to each infrared receiving tube of offside.
Every 8 transmitting tubes in infrared transmitting tube are formed into a transmitting tube in infrared transmitting circuit on the circuit board
Group, the output port connection that 8 transmitting tube cathode in each group link together by transmitting pipe driving chip, in group
The output port that 8 transmitting tube anodes are emitted pipe driving chip by another model respectively connects.
Every 8 reception pipes in infrared receiving tube are formed into a reception pipe in infrared receiving circuit on the circuit board
Group, the output port connection that 8 reception pipe cathode in each group link together by reception pipe driving chip, in group
8 reception pipe anodes are connected by an output port of the reception pipe driving chip of another model respectively.
A kind of recognition methods based on infrared touch panel multi-touch system, step are：
Core processor generates the infrared hair that four road drive signals respectively drive each direction in X-direction and Y-direction simultaneously
It penetrates pipe and sends 2 beam infrared lights to the infrared receiving tube of offside, X-direction and the reverse scan simultaneously of Y-direction both direction form phase
Mutually vertical echelette scanning net and inclined echelette scan net；
Judge whether X-direction and Y-direction have infrared ray to be blocked, if there is blocking, then positions blocking coordinate, identify touch-control
The position of point；
Wherein：Described judges whether X-direction and Y-direction have infrared ray to be blocked, and if there is blocking, then positions blocking and sits
Mark, identifies that the position of touch point includes：When having or more than two blocking points at 2 points, recognition methods executes step and includes：Mutual
When perpendicular echelette and inclined echelette scan, X-direction and Y-direction two coordinate points can be respectively obtained again, i.e.,
X1、X2、Y1、Y2, can be obtained 4 points, i.e. A (X by combinatorial coordinates1, Y1)、B(X1, Y2)、C(X2, Y2)、D(X2, Y1), according to
The launch angle of transmitting tube on one direction calculates reception pipe offset in this direction, and the offset of the comparative analysis direction receives
Pipe is blocked situation, judges the true and false of point, then infer the true and false of other three points, determines true touch point.
A kind of recognition methods based on infrared touch panel multi-touch system, step are：
Core processor generates the infrared hair that four road drive signals respectively drive each direction in X-direction and Y-direction simultaneously
It penetrates pipe and sends 2 beam infrared lights to the infrared receiving tube of offside, X-direction and the reverse scan simultaneously of Y-direction both direction form phase
Mutually vertical echelette scanning net and inclined echelette scan net；
It is big barrier occur to block on touch screen, judges whether X-direction and Y-direction have infrared ray to be blocked, if there is
It blocks, then positions blocking coordinate, identify that the position step of touch point includes：It is reversed simultaneously by X-direction and Y-direction both direction
The coordinates regional for obtaining the coordinate of true touch point and being blocked by barrier is scanned, determines offset launch pipe and offset reception pipe,
The signal received by comparing multiple infrared receiving tubes are analyzed, judges whether some transmitting tube is blocked, if there is transmitting tube quilt
It blocks, then true touch point is determined by the offset of offset launch pipe and offset reception pipe.
Beneficial effects of the present invention：The present invention is in the way of X-direction and the full screen scanning of Y-direction both ends reverse scan simultaneously
Quickly scanning makes infrared transmitting tube form vertical echelette scanning net and the scanning of inclined echelette with infrared receiving tube
Net judges true and false touch point by coordinate shift amount, also can accurate judgement touch point in the case where there is big barrier to block.
Specific implementation mode
One kind being based on infrared touch panel multi-touch system, including the circuit board on touch screen, four side of circuit board are arranged
One-to-one infrared transmitting tube and infrared receiving tube, control infrared transmitting tube and infrared receiving tube core processor and with
The host of core processor port connection, infrared transmitting tube and infrared receiving tube are sequentially arranged in the side X on four side of circuit plate framework
To and Y-direction, core processor generate four road drive signals simultaneously and respectively drive the infrared of each direction in X-direction and Y-direction
Transmitting tube sends 2 beam infrared lights to the infrared receiving tube of offside.
The infrared transmitting tube emits echelette to each infrared receiving tube of offside.
Every 8 transmitting tubes in infrared transmitting tube are formed into a transmitting tube in infrared transmitting circuit on the circuit board
Group, the output port connection that 8 transmitting tube cathode in each group link together by transmitting pipe driving chip, in group
The output port that 8 transmitting tube anodes are emitted pipe driving chip by another model respectively connects.
Every 8 reception pipes in infrared receiving tube are formed into a reception pipe in infrared receiving circuit on the circuit board
Group, the output port connection that 8 reception pipe cathode in each group link together by reception pipe driving chip, in group
8 reception pipe anodes are connected by an output port of the reception pipe driving chip of another model respectively.
One kind being based on infrared touch panel multi-touch system recognition methods, and step is：
Core processor generates the infrared hair that four road drive signals respectively drive each direction in X-direction and Y-direction simultaneously
It penetrates pipe and sends 2 beam infrared lights to the infrared receiving tube of offside, X-direction and the reverse scan simultaneously of Y-direction both direction form phase
Mutually vertical echelette scanning net and inclined echelette scan net；
Judge whether X-direction and Y-direction have infrared ray to be blocked, if there is blocking, then positions blocking coordinate, identify touch-control
The position of point；
Wherein：Described judges whether X-direction and Y-direction have infrared ray to be blocked, and if there is blocking, then positions blocking and sits
Mark, identifies that the position of touch point includes：When having or more than two blocking points at 2 points, recognition methods executes step and includes：Mutual
When perpendicular echelette and inclined echelette scan, X-direction and Y-direction two coordinate points can be respectively obtained again, i.e.,
X1、X2、Y1、Y2, can be obtained 4 points, i.e. A (X by combinatorial coordinates1, Y1)、B(X1, Y2)、C(X2, Y2)、D(X2, Y1), according to
The launch angle of transmitting tube on one direction calculates reception pipe offset in this direction, and the offset of the comparative analysis direction receives
Pipe is blocked situation, judges the true and false of point, then infer the true and false of other three points, determines true touch point.
A kind of recognition methods based on infrared touch panel multi-touch system, step are：
Core processor generates the infrared hair that four road drive signals respectively drive each direction in X-direction and Y-direction simultaneously
It penetrates pipe and sends 2 beam infrared lights to the infrared receiving tube of offside, X-direction and the reverse scan simultaneously of Y-direction both direction form phase
Mutually vertical echelette scanning net and inclined echelette scan net；
It is big barrier occur to block on touch screen, judges whether X-direction and Y-direction have infrared ray to be blocked, if there is
It blocks, then positions blocking coordinate, identify that the position step of touch point includes：It is reversed simultaneously by X-direction and Y-direction both direction
The coordinates regional for obtaining the coordinate of true touch point and being blocked by barrier is scanned, determines offset launch pipe and offset reception pipe,
The signal received by comparing multiple infrared receiving tubes are analyzed, judges whether some transmitting tube is blocked, if there is transmitting tube quilt
It blocks, then true touch point is determined by the offset of offset launch pipe and offset reception pipe.
Embodiment 1
One kind being based on infrared touch panel multi-touch system, including the circuit board on touch screen, four side of circuit board are arranged
One-to-one infrared transmitting tube and infrared receiving tube, control infrared transmitting tube and infrared receiving tube core processor and with
The host of core processor port connection, infrared transmitting tube and infrared receiving tube are sequentially arranged in the side X on four side of circuit plate framework
To and Y-direction, core processor generate four road drive signals simultaneously and respectively drive the infrared of each direction in X-direction and Y-direction
Transmitting tube sends 2 beam infrared lights to the infrared receiving tube of offside.
The infrared transmitting tube emits echelette to each infrared receiving tube of offside.
Every 8 transmitting tubes in infrared transmitting tube are formed into a transmitting tube in infrared transmitting circuit on the circuit board
Group, the output port connection that 8 transmitting tube cathode in each group link together by transmitting pipe driving chip, in group
The output port that 8 transmitting tube anodes are emitted pipe driving chip by another model respectively connects.
Every 8 reception pipes in infrared receiving tube are formed into a reception pipe in infrared receiving circuit on the circuit board
Group, the output port connection that 8 reception pipe cathode in each group link together by reception pipe driving chip, in group
8 reception pipe anodes are connected by an output port of the reception pipe driving chip of another model respectively.
A kind of recognition methods based on infrared touch panel multi-touch system, step are：
Core processor generates the infrared hair that four road drive signals respectively drive each direction in X-direction and Y-direction simultaneously
It penetrates pipe and sends 2 beam infrared lights to the infrared receiving tube of offside, X-direction and the reverse scan simultaneously of Y-direction both direction form phase
Mutually vertical echelette scanning net and inclined echelette scan net；
Judge whether X-direction and Y-direction have infrared ray to be blocked, if there is blocking, then positions blocking coordinate, identify touch-control
The position of point；
Wherein：Described judges whether X-direction and Y-direction have infrared ray to be blocked, and if there is blocking, then positions blocking and sits
Mark, identifies that the position of touch point includes：When having or more than two blocking points at 2 points, recognition methods executes step and includes：Mutual
When perpendicular echelette and inclined echelette scan, X-direction and Y-direction two coordinate points can be respectively obtained again, i.e.,
X1、X2、Y1、Y2, can be obtained 4 points, i.e. A (X by combinatorial coordinates1, Y1)、B(X1, Y2)、C(X2, Y2)、D(X2, Y1), according to
The launch angle of transmitting tube on one direction calculates reception pipe offset in this direction, and the offset of the comparative analysis direction receives
Pipe is blocked situation, judges the true and false of point, then infer the true and false of other three points, determines true touch point.
Specifically deterministic process is：When mutually perpendicular echelette and inclined echelette scan, can again X-direction and
Y-direction respectively obtains two coordinate points, i.e. X1、X2、Y1、Y2, can be obtained 4 points, i.e. A (X by combinatorial coordinates1, Y1)、B
(X1, Y2)、C(X2, Y2)、D(X2, Y1), but four o'clock, only there are two true touch points when point, the other two are false touch point,
By actual conditions it is found that A, C's is true and false vertical identical, the true and false attribute of B, D are identical, select A points as judging a little, according to transmitting
The angle of departure ∮ of pipe calculates the offset △ Xa of X-direction：△ Xa=Y1 × tan (∮), to obtain the offset launch pipe position of X-direction
Set X1sp, then pass through angle of departure ∮ and offset launch pipe position X1spObtain offset reception pipe position X1rp, last comparative analysis X-direction
Deviate reception pipe X1rpThe case where being blocked, if X1rpIt is blocked, then A points are true touch points, while C points are also actual touch
Point, B, D point vacation point, if conversely, X1rpIt is not blocked, then A points are false point, while C points are also false point, and B, D point are actual touch
Point.
Embodiment 2
A kind of recognition methods based on infrared touch panel multi-touch system, step are：
Core processor generates the infrared hair that four road drive signals respectively drive each direction in X-direction and Y-direction simultaneously
It penetrates pipe and sends 2 beam infrared lights to the infrared receiving tube of offside, X-direction and the reverse scan simultaneously of Y-direction both direction form phase
Mutually vertical echelette scanning net and inclined echelette scan net；
It is big barrier occur to block on touch screen, judges whether X-direction and Y-direction have infrared ray to be blocked, if there is
It blocks, then positions blocking coordinate, identify that the position step of touch point includes：It is reversed simultaneously by X-direction and Y-direction both direction
The coordinates regional for obtaining the coordinate of true touch point and being blocked by barrier is scanned, determines offset launch pipe and offset reception pipe,
The signal received by comparing multiple infrared receiving tubes are analyzed, judges whether some transmitting tube is blocked, if there is transmitting tube quilt
It blocks, then true touch point is determined by the offset of offset launch pipe and offset reception pipe.
Specifically deterministic process is：When mutually perpendicular echelette and inclined echelette scan, Y-direction is from YaIt arrives
YbRegion is blocked by barrier B, and A points are true touch point, passes through an X-direction and the reverse scan simultaneously of Y-direction both direction
Afterwards, A point X-direction coordinates X is obtaineds, definite value transmitting tube X-direction offset is chosen, determines offset launch pipe Xsl, according to different transmitting tubes
Angle of departure ∮, determine offset reception pipe Xrl, the signal that is subject to according to reception pipe, it is known that whether some transmitting tube is blocked, if having
Transmitting tube is blocked, then is true touch point.
One embodiment of the present invention has been described in detail above, but the content be only the present invention preferable implementation
Example should not be construed as limiting the practical range of the present invention.It is all according to all the changes and improvements made by the present patent application range
Deng should all still fall within the scope of the patent of the present invention.
Claims (6)
1. one kind being based on infrared touch panel multi-touch system, which is characterized in that including circuit board, the circuit board four on touch screen
The one-to-one infrared transmitting tube and infrared receiving tube of side setting, the kernel processes for controlling infrared transmitting tube and infrared receiving tube
Device and the host being connect with core processor port, infrared transmitting tube and infrared receiving tube are sequentially arranged in circuit plate framework four
The X-direction and Y-direction on side, core processor generate four road drive signals and respectively drive each direction in X-direction and Y-direction simultaneously
Infrared transmitting tube to the infrared receiving tube of offside send 2 beam infrared lights.
2. according to claim 1 be based on infrared touch panel multi-touch system, which is characterized in that the infrared emission
Pipe emits echelette to each infrared receiving tube of offside.
3. according to claim 1 be based on infrared touch panel multi-touch system, which is characterized in that on the circuit board
Infrared transmitting circuit in every 8 transmitting tubes in infrared transmitting tube are formed into a transmitting tube group, 8 transmitting tubes in each group
Cathode links together to be connected by an output port of transmitting pipe driving chip, and 8 transmitting tube anodes in group are respectively by another
One model emits the output port connection of pipe driving chip.
4. according to claim 1 be based on infrared touch panel multi-touch system, which is characterized in that on the circuit board
Infrared receiving circuit in every 8 reception pipes in infrared receiving tube are formed into a reception pipe group, 8 reception pipes in each group
Cathode links together to be connected by an output port of reception pipe driving chip, and 8 reception pipe anodes in group are respectively by another
The output port connection of the reception pipe driving chip of one model.
5. a kind of recognition methods based on infrared touch panel multi-touch system according to claim 1, which is characterized in that
Identification step is：
Core processor generates the infrared transmitting tube that four road drive signals respectively drive each direction in X-direction and Y-direction simultaneously
2 beam infrared lights are sent to the infrared receiving tube of offside, X-direction and the reverse scan simultaneously of Y-direction both direction are formed and mutually hung down
Straight echelette scanning net and inclined echelette scan net；
Judge whether X-direction and Y-direction have infrared ray to be blocked, if there is blocking, then positions blocking coordinate, identify touch point
Position；
Wherein：Described judges whether X-direction and Y-direction have infrared ray to be blocked, and if there is blocking, then positions blocking coordinate,
The position of identification touch point includes：When having or more than two blocking points at 2 points, recognition methods executes step and includes：It is hanging down mutually
When straight echelette and inclined echelette scan, X-direction and Y-direction two coordinate points, i.e. X can be respectively obtained again1、X2、
Y1、Y2, can be obtained 4 points, i.e. A (X by combinatorial coordinates1, Y1)、B(X1, Y2)、C(X2, Y2)、D(X2, Y1), according to a side
The launch angle of upward transmitting tube calculates reception pipe offset in this direction, and comparative analysis direction offset reception pipe is hidden
Situation is kept off, the true and false of point is judged, then infer the true and false of other three points, determines true touch point.
6. a kind of recognition methods based on infrared touch panel multi-touch system according to claim 1, which is characterized in that
Identification step is：
Core processor generates the infrared transmitting tube that four road drive signals respectively drive each direction in X-direction and Y-direction simultaneously
2 beam infrared lights are sent to the infrared receiving tube of offside, X-direction and the reverse scan simultaneously of Y-direction both direction are formed and mutually hung down
Straight echelette scanning net and inclined echelette scan net；
It is big barrier occur to block on touch screen, judges whether X-direction and Y-direction have infrared ray to be blocked, if there is blocking,
Blocking coordinate is then positioned, identifies that the position step of touch point includes：Pass through X-direction and the reverse scan simultaneously of Y-direction both direction
The coordinates regional for obtaining the coordinate of true touch point and being blocked by barrier determines offset launch pipe and offset reception pipe, passes through
The signal that the multiple infrared receiving tubes of comparative analysis receive, judges whether some transmitting tube is blocked, if there is transmitting tube to be blocked,
True touch point is then determined by the offset of offset launch pipe and offset reception pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810472291.2A CN108733266A (en) | 2018-05-17 | 2018-05-17 | One kind being based on infrared touch panel multi-touch system and its recognition methods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810472291.2A CN108733266A (en) | 2018-05-17 | 2018-05-17 | One kind being based on infrared touch panel multi-touch system and its recognition methods |
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| Publication Number | Publication Date |
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| CN108733266A true CN108733266A (en) | 2018-11-02 |
Family
ID=63938451
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810472291.2A Withdrawn CN108733266A (en) | 2018-05-17 | 2018-05-17 | One kind being based on infrared touch panel multi-touch system and its recognition methods |
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| CN (1) | CN108733266A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888560A (en) * | 2019-12-04 | 2020-03-17 | 湖州佳格电子科技股份有限公司 | Infrared touch screen, and coverage detection method and system thereof |
| CN111240530A (en) * | 2020-01-08 | 2020-06-05 | 广州市三川田文化科技股份有限公司 | Multi-point touch method of cylindrical touch display device |
| CN111553273A (en) * | 2020-04-28 | 2020-08-18 | 杭州晶一智能科技有限公司 | Grass condition identification method based on infrared detection array |
| CN112558817A (en) * | 2020-11-09 | 2021-03-26 | 吴建国 | Infrared three-dimensional scanning structure and application thereof in air touch screen and air key |
| CN113946239A (en) * | 2021-10-25 | 2022-01-18 | 中航华东光电有限公司 | Infrared touch screen driving system and method and infrared touch screen |
| CN114578994A (en) * | 2022-03-22 | 2022-06-03 | 科派斯顿(深圳)科技有限公司 | Ultra-high precision identification system of infrared touch screen and use method |
-
2018
- 2018-05-17 CN CN201810472291.2A patent/CN108733266A/en not_active Withdrawn
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110888560A (en) * | 2019-12-04 | 2020-03-17 | 湖州佳格电子科技股份有限公司 | Infrared touch screen, and coverage detection method and system thereof |
| CN111240530A (en) * | 2020-01-08 | 2020-06-05 | 广州市三川田文化科技股份有限公司 | Multi-point touch method of cylindrical touch display device |
| CN111553273A (en) * | 2020-04-28 | 2020-08-18 | 杭州晶一智能科技有限公司 | Grass condition identification method based on infrared detection array |
| CN112558817A (en) * | 2020-11-09 | 2021-03-26 | 吴建国 | Infrared three-dimensional scanning structure and application thereof in air touch screen and air key |
| CN112558817B (en) * | 2020-11-09 | 2022-05-06 | 吴建国 | Infrared three-dimensional scanning structure and application thereof in air touch screen and air key |
| CN113946239A (en) * | 2021-10-25 | 2022-01-18 | 中航华东光电有限公司 | Infrared touch screen driving system and method and infrared touch screen |
| CN114578994A (en) * | 2022-03-22 | 2022-06-03 | 科派斯顿(深圳)科技有限公司 | Ultra-high precision identification system of infrared touch screen and use method |
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Application publication date: 20181102 |